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That's fair, and obviously I can't fix focus now. Any other thoughts to make the best of a poorly focused pic? I am not any better in PP than I am at focus apparently, though I'm working on it.
Unfortunately once an image is OOF that is it.
Try using the center focus point only in your camera next time. The 70-200/4 IS you used is a very sharp lens and you shouldn't have any problem.
You shot that pic at 70mm. May be using 200mm centered on the butterfly will do the trick.
Having said so, I believe that is a sweet image of your daughter and the butterfly adds to the image. I would also leave all the original colors too.
You just can't have both, your daughter and the butterfly as the main subjects. You need to decide and sacrifice one or the other.